Handle Nullable<bool> in the InputCheckbox component

[Joni-Torrado]

Hi,
I'm getting this error:

blazor.server.js:19 [2021-02-01T10:38:34.738Z] Error: System.InvalidOperationException: Unable to set property 'ValueChanged' on object of type 'VxFormGenerator.Form.Components.Bootstrap.BootstrapInputCheckbox'. The error was: Unable to cast object of type 'Microsoft.AspNetCore.Components.EventCallback`1[System.Nullable`1[System.Boolean]]' to type 'Microsoft.AspNetCore.Components.EventCallback`1[System.Boolean]'.
 ---> System.InvalidCastException: Unable to cast object of type 'Microsoft.AspNetCore.Components.EventCallback`1[System.Nullable`1[System.Boolean]]' to type 'Microsoft.AspNetCore.Components.EventCallback`1[System.Boolean]'.
   at Microsoft.AspNetCore.Components.Reflection.PropertySetter.CallPropertySetter[TTarget,TValue](Action`2 setter, Object target, Object value)
   at Microsoft.AspNetCore.Components.Reflection.ComponentProperties.<SetProperties>g__SetProperty|2_0(Object target, PropertySetter writer, String parameterName, Object value)
   --- End of inner exception stack trace ---
   at Microsoft.AspNetCore.Components.Reflection.ComponentProperties.<SetProperties>g__SetProperty|2_0(Object target, PropertySetter writer, String parameterName, Object value)
   at Microsoft.AspNetCore.Components.Reflection.ComponentProperties.SetProperties(ParameterView& parameters, Object target)
   at Microsoft.AspNetCore.Components.Forms.InputBase`1.SetParametersAsync(ParameterView parameters)
   at Microsoft.AspNetCore.Components.Rendering.ComponentState.SetDirectParameters(ParameterView parameters)
   at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InitializeNewComponentFrame(DiffContext& diffContext, Int32 frameIndex)
   at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InitializeNewSubtree(DiffContext& diffContext, Int32 frameIndex)
   at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InsertNewFrame(DiffContext& diffContext, Int32 newFrameIndex)
   at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& diffContext, Int32 oldStartIndex, Int32 oldEndIndexExcl, Int32 newStartIndex, Int32 newEndIndexExcl)
   at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.ComputeDiff(Renderer renderer, RenderBatchBuilder batchBuilder, Int32 componentId, ArrayRange`1 oldTree, ArrayRange`1 newTree)
   at Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder batchBuilder, RenderFragment renderFragment)
   at Microsoft.AspNetCore.Components.RenderTree.Renderer.RenderInExistingBatch(RenderQueueEntry renderQueueEntry)
   at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue()

Class property
public bool? IsBundle { get; set; }

[Aaltuj]

You need to create an InputCheckbox that allows for Nullable types.

As you can see in the image, it works when the components handle the nullable types.

The bootstrap and plain version are based on the InputCheckbox component. However it's a copy of the original, so it's fixable in this library.

So feel free to fix it here and create a pull request.

Otherwise I'll put it in the backlog.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.